On K-12 Mathematics

Essays and conversations about teaching, leading, and learning mathematics together

Teaching and learning are deeply human endeavors.

The K-12 Mathematics collection

Mathematics is beautifully logical—and deeply human.

Students’ mathematics success depends as much on the relationships they build, the tasks and questions we invite them to explore, and the culture we create as it does the content we teach.

These essays are grounded in the belief that every student can learn mathematics. Together we’ll explore and think deeply about practical ideas, research-informed routines and practices, a PreK-12 mathematical library of resources, and stories from classrooms that remind us why mathematics remains one of the most hopeful subjects we teach.

These essays are written for everyone who teaches, supports, coaches, or leads mathematics learning—from classroom teachers and collaborative teams to instructional coaches, principals, and district leaders.

Whether you’re just beginning your journey or have been teaching mathematics for decades, I’m glad you’re here.

Imagine!

Imagine every student experiencing mathematics with reasoning, curiosity, sense-making, skill-building, competence and confidence.

Imagine collaborative teams continually learning together—using common assessments, thoughtful interventions, and ongoing reflections to strengthen instruction for every learner.

Imagine technology and generative AI serving as thoughtful tools that deepen mathematical thinking, perseverance, and agency, rather than replacing them.